1 | /* SPDX-License-Identifier: GPL-2.0-or-later */ |
2 | /* |
3 | * iSCSI Initiator TCP Transport |
4 | * Copyright (C) 2004 Dmitry Yusupov |
5 | * Copyright (C) 2004 Alex Aizman |
6 | * Copyright (C) 2005 - 2006 Mike Christie |
7 | * Copyright (C) 2006 Red Hat, Inc. All rights reserved. |
8 | * maintained by open-iscsi@googlegroups.com |
9 | * |
10 | * See the file COPYING included with this distribution for more details. |
11 | */ |
12 | |
13 | #ifndef ISCSI_SW_TCP_H |
14 | #define ISCSI_SW_TCP_H |
15 | |
16 | #include <scsi/libiscsi.h> |
17 | #include <scsi/libiscsi_tcp.h> |
18 | |
19 | struct socket; |
20 | struct iscsi_tcp_conn; |
21 | |
22 | /* Socket connection send helper */ |
23 | struct iscsi_sw_tcp_send { |
24 | struct iscsi_hdr *hdr; |
25 | struct iscsi_segment segment; |
26 | struct iscsi_segment data_segment; |
27 | }; |
28 | |
29 | struct iscsi_sw_tcp_conn { |
30 | struct socket *sock; |
31 | /* Taken when accessing the sock from the netlink/sysfs interface */ |
32 | struct mutex sock_lock; |
33 | |
34 | struct work_struct recvwork; |
35 | bool queue_recv; |
36 | |
37 | struct iscsi_sw_tcp_send out; |
38 | /* old values for socket callbacks */ |
39 | void (*old_data_ready)(struct sock *); |
40 | void (*old_state_change)(struct sock *); |
41 | void (*old_write_space)(struct sock *); |
42 | |
43 | /* data and header digests */ |
44 | struct ahash_request *tx_hash; /* CRC32C (Tx) */ |
45 | struct ahash_request *rx_hash; /* CRC32C (Rx) */ |
46 | |
47 | /* MIB custom statistics */ |
48 | uint32_t sendpage_failures_cnt; |
49 | uint32_t discontiguous_hdr_cnt; |
50 | }; |
51 | |
52 | struct iscsi_sw_tcp_host { |
53 | struct iscsi_session *session; |
54 | }; |
55 | |
56 | struct iscsi_sw_tcp_hdrbuf { |
57 | struct iscsi_hdr hdrbuf; |
58 | char hdrextbuf[ISCSI_MAX_AHS_SIZE + |
59 | ISCSI_DIGEST_SIZE]; |
60 | }; |
61 | |
62 | #endif /* ISCSI_SW_TCP_H */ |
63 | |